扭剪型和高强度螺栓大六角头型的区别

The difference between torsion shear type and high-strength bolt large hexagonal head type

　　一、外观不同

1、 Different appearance

　　1、高强度螺栓大六角头：大六角头螺栓的螺帽是正六角形的。

1. High strength bolt with large hexagonal head: The nut of the large hexagonal head bolt is a regular hexagon.

　　2、扭剪型螺栓：顶端部有梅花卡头。

2. Twisted shear bolt: There is a plum blossom clamp at the top.

　　二、施工方式不同

2、 Different construction methods

　　1、高强度螺栓大六角头：使用定扭矩扳手施工，由于其施拧时并不握裹螺杆，在旋转螺母的同时可能会带动螺杆进行“同转”，无谓消耗扭矩值，造成无法拧紧。故将螺杆头设计成大六角，在发生同转的情况时，可以用普通扳手予以临时固定，避免同转现象。

1. High strength bolt with large hexagonal head: When using a fixed torque wrench for construction, as it does not grip the screw during tightening, it may drive the screw to rotate simultaneously while rotating the nut, unnecessarily consuming torque value and causing inability to tighten. Therefore, the screw head is designed as a large hexagon, and in case of simultaneous rotation, an ordinary wrench can be used to temporarily fix it to avoid simultaneous rotation.

　　2、扭剪型螺栓：使用扭剪型扳手施工，其根部使用正反向扭杆直接通过“梅花头”夹紧螺杆本身，故施拧时不会发生同转现象。

2. Twisted shear type bolt: Construction is carried out using a twisted shear type wrench, and the root of the bolt is directly clamped by a "plum blossom head" with a forward and reverse torsion rod, so there will be no simultaneous rotation during tightening.

　　三、强度等级不同

3、 Different strength levels

　　1、高强度螺栓大六角头：属于普通螺丝的高强度级。

1. High strength bolt with large hexagonal head: belongs to the high-strength grade of ordinary screws.

　　2、扭剪型螺栓：是大六角高强螺栓的改进型，为了更好施工高强螺栓的施工必须先初紧后终紧，初紧高强螺栓需用冲击型电动扳手或扭矩可调电动扳手。

2. Twist shear type bolt: It is an improved version of the large hexagonal high-strength bolt. In order to better construct high-strength bolts, the initial tightening must be followed by final tightening. The initial tightening of high-strength bolts requires the use of an impact type electric wrench or a torque adjustable electric wrench.

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